/Engine/Source/Runtime/Experimental/Chaos/Public/GeometryCollection/ManagedArrayCollection.h
Get information on the total storage required for each element in each group
void GetElementSizeInfoForGroups ( [TArray](API\Runtime\Core\Containers\TArray)< TPair< [FName](API\Runtime\Core\UObject\FName), SIZE_T >> & OutSizeInfo ) const